Nagios in <10 mins with PuppetDecember 3rd, 2012PuppetCamp SEA #2,Singapore

Goh Choon Ming, OlinData

Setup difficulty?

Puppet made it simpler to setup

Puppet resource types

@@nagios_host { $::fqdn: ensure => present, address => $::fqdn, use => "generic-host", tag => $domain, }

@@nagios_service { "check_ping_$::fqdn" : host_name => $::fqdn, use => "generic-service", check_command => "check_ping!600,20%!1000,50%", service_description => "check_ping", tag => $::domain, }

nagios_command { 'check_http_alt': ensure => present, command_line => "/usr/lib/nagios/plugins/check_http -H \'\$HOSTADDRESS\$\' -p \'\$ARG1\$\' -u \'\$ARG2\$\' -e \'HTTP\/1.1 200 OK\'", }

nagios_contact { 'choonming': ensure => present, alias => 'CM', email => 'choonming@olindata.com', host_notification_commands => 'notify-service-by-email', service_notification_commands => 'notify-service-by-email', host_notification_period => '24x7', service_notification_period => '24x7', host_notification_options => 'd,r', service_notification_options => 'w,c,u,r', }

And many many othershttp://docs.puppetlabs.com/references/stable/type.

html

Yet there is another problem?What is it and how do we fix it?

Functions

Tagging

Exported resources

@@nagios_host { $::fqdn: address => $::fqdn, use => "generic-host", tag => $::domain, }

Nagios_host <<| tag == 'olindata.com' |>> { target => '/etc/nagios3/conf.d/services.cfg', notify => Service[ 'nagios3' ], }

How to create a multi-environment Nagios setup?

Environments

if ($environment == "production" ) { Nagios_host <<| tag == "prod.olindata.com" |>> { target => "/etc/nagios3/conf.d/hosts.cfg", notify => Service[ 'nagios3' ], }

Nagios_service <<| tag == "prod.olindata.com" |>> { target => "/etc/nagios3/conf.d/services.cfg", notify => Service[ 'nagios3' ], }else { Nagios_host <<| tag == "test.olindata.com" |>> { target => "/etc/nagios3/conf.d/hosts.cfg", notify => Service[ 'nagios3' ], }

Nagios_service <<| tag == "test.olindata.com" |>> { target => "/etc/nagios3/conf.d/services.cfg", notify => Service[ 'nagios3' ], }

Taking another step further with Nagios

Executing plugins on remote machines with NRPE

Defined resource types

define nagios::nrpe($command, $sudo=false) {

$sudo_command = $sudo ? { true => "/usr/bin/sudo ", False => ' ', }

file { "/etc/nagios/nrpe.d/$name.cfg": content => "command[$name]=$sudo_command/usr/lib/nagios/plugins/$command\n", require => Package["nagios-nrpe-server"], notify => Service["nagios-nrpe-server"], }}

@@nagios_service { "check_disk_${::fqdn}": check_command => "check_nrpe_1arg!check_disk", use => "generic-service", host_name => $f::qdn, service_description => "check_disk", tag => $::domain, }

nagios::nrpe { "check_disk" : command => "check_disk -w 20% -c 10% -l" }

Taking another step further with Nagios and Puppet's resources resource type

resources { 'nagios_host': purge => true, } resources { 'nagios_service': purge => true, }

DEMO

Questions?

How to find me?

Email:▫ choonming[at]olindata.com

• Twitter:▫ @choonming

• Github:▫ https://github.com/choonming▫ https://github.com/tribily

• Facebook:▫ https://fb.me/olindata

• IRC:▫ Freenode - choonming

Thank you!